52928840 has 16 divisors (see below), whose sum is σ = 119089980. Its totient is φ = 21171520.

The previous prime is 52928839. The next prime is 52928849. The reversal of 52928840 is 4882925.

It can be written as a sum of positive squares in 2 ways, for example, as 46158436 + 6770404 = 6794^2 + 2602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52928794 and 52928803.

It is not an unprimeable number, because it can be changed into a prime (52928849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661571 + ... + 661650.

Almost surely, 2^52928840 is an apocalyptic number.

It is an amenable number.

52928840 is an abundant number, since it is smaller than the sum of its proper divisors (66161140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52928840 is a wasteful number, since it uses less digits than its factorization.

52928840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323232 (or 1323228 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 52928840 is about 7275.2209588438. The cubic root of 52928840 is about 375.4603886223.

The spelling of 52928840 in words is "fifty-two million, nine hundred twenty-eight thousand, eight hundred forty".